DE8331665U1 - CIRCUIT PUMP FOR WATER HEATERS ON BATHTUBS - Google Patents

Description

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World of patents \ .T.:. .ϊ / .. \. Dipl.-Phys. Rudolf Peerbooms Dlekmtnnttvte 48c Ruf (0202) 58 6147

5600 Wuppertal-Bärmen gm 3862/83

Utility model

Applicant: Hugo Lahme GmbH 5828 Ennepetal

Circulation pump for water jets on bathtubs

The invention relates to a circulation pump for water jets on bathtubs, eddy current bathtubs or the like. In the form of a radial pump with a horizontal suction opening, with an upwardly directed outlet and with a residual water outlet at the lowest point of the interior of the housing.

Such circulation pumps are used for bathtubs, eddy current bathtubs, the so-called Whirl-Pöols, or the like. Used. They suck in water from a tub in order to return it to the tub at various points under high pressure. When the tub is drained, the housing of the circulating pump cannot empty itself completely, but a certain amount remains The rest are in the lower area of the inside of the housing. This residual water is once in terms of corrosion of the

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Pump housing disadvantageous. But it is even more problematic that impurities can settle in the pump housing, which are rewound into the tub when the system is used again. It is for this reason that such circulation pumps are used provided with a residual water drain extending from the deepest point of the interior of the housing, usually using a hose. This residual water drain is after draining the tub directly via a manual valve or in remote control via a Solenoid valve actuated, which makes the circulation system complex and cumbersome to handle or maintain or repair is.

The invention is based on the object of creating a circulating pump of the generic type whose residual water drainage is simple the production and operation and is not susceptible to failure.

According to the invention, this object is achieved in that the suction opening is guided past the lower edge of the housing Elbow pipe is connected, into which a residual water drainage line going out from the lowest point of the housing interior opens, and that the pipe bend has a much larger inner diameter than the residual water drainage line. The residual water consequently flows over the when draining the bathtub without any special operation Residual water drain line, the pipe elbow and the suction

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derivation. The pump room is in constant communication with the suction line via the residual water drainage line; but the diameter of the residual water drain line is so small that there are no noticeable negative effects on the Result in pump performance. Since no separate operating elements such as remote-controlled solenoid valves, separate drainage channels for the residual water drainage or the like are installed must, the production of the circulation pump according to the invention is very simple, inexpensive and not prone to failure.

According to the invention, the ratio of the inner diameters of the pipe elbow and the residual water discharge line can be about 10: 1 be. With this ratio of the inside diameter there is no noticeable loss of performance in the circulation pump, and on the other hand, the inside diameter of the residual water measuring line is so large that even larger dirt particles can drain away and do not clog the residual water drain line.

In an embodiment of the invention, the pipe bend can be bent twice in an S-shape. This configuration has the advantage that the suction line coming from the tub continues to operate before can be connected in the horizontal direction. In addition, the lower bend of the pipe elbow can be directly on the The lower edge of the pump housing lies in the form of a compact design known circulating pumps are retained despite the additional elbow and the bypass line.

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According to the invention, the elbow and the housing can be provided with mutually aligned pipe sockets, in which Extended end sections a connecting sleeve is inserted, the inner diameter of which is equal to the inner diameter of the adjoining pipe socket is. In this design, the residual water drainage line consists of two mutually aligned Pipe socket with an inserted connecting socket is the assembly of the pipe elbow on the actual pump housing Conceivably simple »It is sufficient to screw the pipe elbow to the suction opening of the pump housing, while the connection of the two pipe sockets forming the residual water drainage line is provided by simply plugging them on the connecting socket is provided with mutual guidance and, in addition, a seal can also be implemented in a simple manner. Since the inner diameter of the connecting socket and that of the connecting pipe socket are the same, there are no such protrusions in the residual water drainage line, where contaminants could collect.

According to the invention, the pipe socket on the housing side end in the plane of the suction opening of the housing. The connecting surfaces between the pipe elbow and the suction opening as well between the two pipe sockets are thus in the same plane, which both the production and the assembly of

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Pump housing and elbow simplified. The post-processing the connection surfaces of the cast pipe elbow and the pump housing by milling or grinding can thus be in be carried out in a single operation.

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In an embodiment of the invention, the residual water drainage line can run parallel to the housing axis. With this orientation the residual water drainage line, a very small size of the circulation pump can be achieved, since the deepest point of the The interior of the housing and the lower bend of the pipe elbow are on the same level.

According to a further embodiment of the invention, the residual water drainage lines and the housing axis to the pipe bend diverge slightly towards In this embodiment, that can Residual water drain off so quickly that there is no contamination either in the pump housing or in the residual water drainage line can fix. The size of the circulation pump only increases slightly as a result.

The invention is described below with reference to the drawing. In the drawing show:

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Fig. 1 is equipped with a circulating pump and water jets bathtub and

2 shows a circulation pump in a side view.

1 shows a tub 1 which is equipped with water jets 2 is. In operation, water is over a deeper Suction line 3 is fed horizontally to a circulating pump 4, which in turn feeds the water with increased pressure via a Distributor with feed lines 5 feeds the water jets 2. In the suction line 3, the water flows in the direction of the arrow 6, in the feed lines 5 in the direction of the arrow When the water is drained from the tub, the Circulation pump 4 via the suction line 3.

Fig. 2 shows a circulation pump 4 in the form of a radial pump with a horizontal suction opening 9 and one at the top directed outlet 10. A pipe bend 11 is connected to the suction opening 9, which is bent twice in an S-shape is, so that it has a horizontal connection 12 for the suction line 3. The connection 12 is on Height of the lower edge of the housing 13 of the radial pump 8. The radial pump 8 is via a shaft 14 of a not shown Motor driven.

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When draining the tub 1, water collects inside the housing 15, which is now at the deepest point 16 via a Residual water drain line 17 is derived. The residual water drainage line 17 consists of two pipe sockets facing one another 18, 19 is inserted into the enlarged end sections 20, 21 of which a Verbißdungsbuchse 22 is inserted. The inside diameter the connecting socket 22 is equal to the inner diameter of the two pipe sockets 18, 19, so that the residual water drainage line 17 has an overall constant inner diameter d. The connecting socket 22 is used for mutual Guiding of the two pipe sockets 18. 19. Seals 23 attached to the connecting bush 22 ensure a seal the transition area between the pipe sockets 18, 19.

The suction opening 9 on the housing 25 of the radial pump 8 lies in the same plane as the transition surface 24 between the two pipe sockets 18, 19. The transition surface 24 and the suction opening 9 can thereby be processed in one operation.

In the circulating pump 4 shown, the ratio of the inside diameter D of the pipe bend 11 to the inside diameter is d the residual water drain line 17 about 10: 1, so that on the one hand water from the housing interior 15 into the pipe bend and can flow further into the suction line 3, and other

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On the other hand, only extremely low pumping losses occur during operation.

In the example shown of a circulation pump 4, the residual water discharge line 17 runs parallel to the housing axis 26, which with regard to a compact size is advantageous. The water can, however, come out of the housing interior 15 flow better when the residual water drainage line 17 and the housing axis 26 to the elbow 11 diverge slightly and when the line 3 drops to the tub-side end.

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Claims (7)

Patent attorney: · ··; ' Dipl.-Phys. Rudolf Peerbooms DickmannstraBe 45e Ruf (0202) 556147 5600 Wuppertal-Barmen GM 3862/83 Claims 1. Circulation pump for water jets on bathtubs, eddy current bathtubs Or the like., In the form of a radial pump with a horizontal suction opening, with one after outlet pointing upwards and with a residual water drain from the lowest point of the interior of the housing, characterized in that a pipe bend leading past the lower edge of the housing (13) at the suction opening (9) (il) is connected, into which one of the lowest point (16) of the housing interior (15) outgoing residual water drainage line (17) opens, and that the pipe elbow (11) has a much larger inner diameter (D) as the residual water drain line (17). 2. Circulation pump according to claim 1, characterized in that the ratio of the inner diameter (D, d) of Elbow pipe (11) and residual water drain line (17) is approximately 10: 1. 3. Circulation pump according to one of claims 1 or 2, characterized in that the pipe bend (11) is bent twice in an S-shape. Τ · 1 »'· ■ st · 4. Circulation pump according to one of claims 1 to 3, characterized characterized in that the pipe bend (11) and the housing (25) with pipe sockets (18, 18, 19) are provided, in whose extended end sections (20, 21) a connecting bush (22) is inserted, the inside diameter of which is equal to the inside diameter of the pipe socket (18, 19) connected to it. 5. Circulation pump according to one of claims 1 to 4, characterized in that the housing-side pipe socket (19) ends in the plane of the suction opening (9) of the housing (25). 6. Circulation pump according to one of claims 1 to 5, characterized characterized in that the residual water drainage line (17) runs parallel to the housing axis (26). 7. Circulation pump according to one of claims 1 to 5, characterized in that the residual water drain line (17) and the housing axis (26) diverge slightly towards the pipe elbow (11). fl llllllll I ti Il I) II • · t II t I I I • · »· ι iii'iit iii